56521622016 has 80 divisors (see below), whose sum is σ = 167307967200. Its totient is φ = 18840536064.

The previous prime is 56521622011. The next prime is 56521622057. The reversal of 56521622016 is 61022612565.

56521622016 is a `hidden beast` number, since 5 + 6 + 5 + 21 + 622 + 0 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (56521622011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030506 + ... + 2058153.

It is an arithmetic number, because the mean of its divisors is an integer number (2091349590).

Almost surely, 2^56521622016 is an apocalyptic number.

It is an amenable number.

56521622016 is an abundant number, since it is smaller than the sum of its proper divisors (110786345184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56521622016 is an equidigital number, since it uses as much as digits as its factorization.

56521622016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088686 (or 4088664 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 56521622016 in words is "fifty-six billion, five hundred twenty-one million, six hundred twenty-two thousand, sixteen".